<span>The two techniques for separating an insoluble solid from a liquid are filtration and centrifuging. Filtration relies on the fact that the solid particles are smaller than the filter paper pores which allow the tiny molecules of liquid to pass through. With solids which dissolve in a liquid solvent, evaporation is commonly used to recover the solid and distillation is used to recover the solvent.</span>
        
                    
             
        
        
        
Answer:

Explanation:
From the question, we have been asked to find the molarity of FeCl2 having a volume of 450 mL,
We have been provided with 225 g which is proportional to 1.8 moles.
We know that molarity of any solution should be in mol/L. 
1 mole contained in 1 L means it has a molarity of 1 mol/L
Let's convert 450 mL to Litres which is, 

= 0.450 L
Thus, 
 1 mole is contained in 1L
x moles are contained in 0.450 L
Hence, 
x mole/molarity = {1 mole x 1 L}/{0.450 L}
 = 4 mol/L
Therefore 4 mol/L is the molar concentration.
 
        
             
        
        
        
Answer:
Dont use alot of points 
Explanation:
people scam like me and ay the wrong answer and get the points :|
 
        
             
        
        
        
Answer:
The number of sulfur atoms in 1 g of sulfur is:-  atoms
 atoms
Explanation:
Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by  .
.
Avogadro constant:-

Given atomic mass of sulfur = 32 u
Which means that:-
32 g of sulfur contains  of atoms
 of atoms
Also, 
1 g of sulfur contains  of atoms
 of atoms
<u>So, The number of sulfur atoms in 1 g of sulfur is:-  atoms</u>
 atoms</u>
 
        
             
        
        
        
Water vapor
Its still water(H2O)
Just in the gas form